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Read write think is a great resource for lesson plans but also has many types of free templates available for graphic organizers. I have primarily used read write think for brainstorming in the classroom as many of their organizational templates are great accommodation for visual learners or students who really benefit from structure.
This is a sample template for a science fair PowerPoint presentation. I found the format to be really easy to understand. Also, because this is a googledoc, every student can access and post their projects online!